Home / 102,700.20-153,791.10-76,261.80

Finding the Fourth Proportional to 102,700.20, 153,791.10 and 76,261.80

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Solution

The fourth proportional to 102,700.20, 153,791.10 and 76,261.80 is: 114,200.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,700.20 : 153,791.10 = 76,261.80 : x
  2. Step 2: Convert to fraction form
    102,700.20/153,791.10 = 76,261.80/x
  3. Step 3: Cross multiply
    102,700.20x = 153,791.10 × 76,261.80
  4. Step 4: Simplify right side
    102,700.20x = 11,728,386,109.98
  5. Step 5: Solve for x
    x = 11,728,386,109.98/102,700.20
  6. Step 6: Final answer
    x = 114,200.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.